Author: Daniel Kahn Gillmor <dkg@fiftthorseman.net>

Relax dependency, should work fine with bzip2 0.6.x

--- a/Cargo.toml
+++ b/Cargo.toml
@@ -85,7 +85,7 @@
 features = ["runtime-dispatch-simd"]
 
 [dependencies.bzip2]
-version = "0.4"
+version = ">= 0.4, < 0.7"
 optional = true
 
 [dependencies.flate2]
